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Network, Operator Controlled Terminal Mobility in Heterogeneous IP Operator Network, with the Use of Anycast Addressing Scheme

IP.com Disclosure Number: IPCOM000126002D
Original Publication Date: 2005-Jul-25
Included in the Prior Art Database: 2005-Jul-25
Document File: 3 page(s) / 519K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

Wireless Wide Area Network (WWAN) (e.g. GPRS - General Packet Radio Service; UMTS - Universal Mobile Telecommunications System; etc.) operators are currently complementing their network infrastructures with Wireless Local Area Networks (WLAN) (e.g. IEEE 802.16; Hiperlan) for optimizing the offering of packet data services. Mobile terminals working in such heterogeneous operator networks need to handle terminal mobility. For using WWAN resources effectively and providing additional network services to the mobile terminal user, the network operator should be able to control this terminal mobility. The idea is a mobility solution, which may react to the network load conditions or user preferences. By that the network operator may split uplink and downlink data over WWAN and WLAN. An anycast addressing scheme is used as key component in handling terminal mobility. The mobile terminal consists of two physical access interfaces corresponding to WWAN and WLAN. The mobile terminal is enhanced with Terminal Mobility Agent (TMA) functionality (as shown in Fig. 2). The operator network consists of WWAN access facility, WLAN access facility connected to the Internet/Intranet through the Anycast Resolver/Network Mobility Agent (AR/NMA) (as shown in Fig. 1).

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Network, Operator Controlled Terminal Mobility in Heterogeneous IP Operator Network, with the Use of Anycast Addressing Scheme

Idea: Sridhar Narini, DE-Munich; Alessandra Pandolfi, DE-Munich

Wireless Wide Area Network (WWAN) (e.g. GPRS - General Packet Radio Service; UMTS - Universal Mobile Telecommunications System; etc.) operators are currently complementing their network infrastructures with Wireless Local Area Networks (WLAN) (e.g. IEEE 802.16; Hiperlan) for optimizing the offering of packet data services. Mobile terminals working in such heterogeneous operator networks need to handle terminal mobility. For using WWAN resources effectively and providing additional network services to the mobile terminal user, the network operator should be able to control this terminal mobility.

The idea is a mobility solution, which may react to the network load conditions or user preferences. By that the network operator may split uplink and downlink data over WWAN and WLAN. An anycast addressing scheme is used as key component in handling terminal mobility. The mobile terminal consists of two physical access interfaces corresponding to WWAN and WLAN. The mobile terminal is enhanced with Terminal Mobility Agent (TMA) functionality (as shown in Fig. 2). The operator network consists of WWAN access facility, WLAN access facility connected to the Internet/Intranet through the Anycast Resolver/Network Mobility Agent (AR/NMA) (as shown in Fig. 1).

Working procedure oft the terminal mobility solution (Fig. 3):

(1) The mobile terminal attaches to the WWAN network by carrying WWAN network attach procedure, and receives an IP address (ex: aa.bb.cc.dd) from the AR/NMA.

(3) At this moment, the mobile terminal uses the WWAN interface for sending and receiving packet data.

(4) The mobile terminal detects a further access network as for example WLAN coverage offered by the operator, and attaches to the access point.

(5) The mobile terminal configures WLAN interface with the same IP (Internet Protocol) address as that of WWAN interface. The mobile terminal sends an anycast register message, which includes IP address of the WWAN interface and security keys used in t...